Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh hoan » trinh han, trinh hoa, trinh toan
hoan nhung » hoa nhung, hon nhung, doanh nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh trinh hoan nhung ((cong dan) OR (cong san)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh trinh hoan nhung ((cong dan) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh trinh hoan nhung ((cong dan) OR (cong san)) than cau*.